The grass plant has taken millions of years to get to
the stage it is at now. In early times grazing herbivores used it as a
primary food source. Grass plants that grew close to the ground and
developed crowns went on to survive and flourish. Today's turf grass
has evolved from these early survivors. Almost all homeowners receive
enjoyment from their lawns. Very few of us really takes the time to
examine the grass plant up close, by doing so we would be astounded by
its complexity and characteristics.
The primary growth in a grass
plant grows from a ground hugging point known as the crown. By mowing
at a height above the crown you ensure the plants survival. Many times
during a spring clean up, the crew will damage the crown causing
devastating results if the damage occurs during active growth. Shoot
and roots originate from the crown. The root system is utilized by the
plant to hold it in place, as well as being the primary means of
acquiring nutrients and water from the soil. By developing leaves and
stems above ground the plant takes in sunlight and carbon dioxide in a
process known as photosynthesis. First to appear from the crown is the
primary shoot . It produces a leaf and a stem. Each leaf has a blade
and a sheath. The sheath wraps itself around the blade to protect it,
while the blade continues to grow upwards. Where the blade and sheath
meet is known as the collar. In the interior of the collar is a ring of
hairs known as the ligules. Ear shaped lobes known as auricles are
found at the end of the ligule. Grass identification uses the different
sizes, and shapes of the auricles and ligules to categorize individual
cultivars of grass.
Additional shoots originating from the crown
are known as tillers. Tillers aid in making your lawn thick and lush.
By encouraging a thick, lush lawn you go a long way in stopping weed
growth, insect infestation, and damage by turf diseases. Kentucky
Bluegrass, which is a common cultivar in our area, spreads by creeping
stems underground known as rhizomes. As the rhizome continues to grow
it will create additional plants that are capable of sustaining
themselves by producing their own roots and shoots. By taking the time
to understand the basic structures of your grass and how different
grasses reproduce, you will be on your way to creating a lush, thick
weed free lawn.
Paul
is a Certified Pesticide Applicator in the province of Alberta,Canada.
He has 15 years experience in the lawn care industry.